package com.example.campus.config;

import com.example.campus.interceptor.JwtTokenAdminInterceptor;
import com.example.campus.interceptor.JwtTokenUserInterceptor;
import com.example.campus.utils.json.JacksonObjectMapper;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import org.springframework.web.servlet.config.annotation.CorsRegistry;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport;
import springfox.documentation.builders.ApiInfoBuilder;
import springfox.documentation.builders.PathSelectors;
import springfox.documentation.builders.RequestHandlerSelectors;
import springfox.documentation.service.ApiInfo;
import springfox.documentation.spi.DocumentationType;
import springfox.documentation.spring.web.plugins.Docket;

import java.util.List;

/**
 * 配置类，注册web层相关组件
 */
@Configuration
@Slf4j
public class WebMvcConfiguration extends WebMvcConfigurationSupport {

    @Autowired
    private JwtTokenAdminInterceptor jwtTokenAdminInterceptor;

    @Autowired
    private JwtTokenUserInterceptor jwtTokenUserInterceptor;

//    @Autowired
//    private RefreshJwtTokenUserInterceptor refreshJwtTokenUserInterceptor;

    /**
     * 注册自定义拦截器
     *
     * @param registry
     */
    protected void addInterceptors(InterceptorRegistry registry) {
        log.info("开始注册自定义拦截器...");
        registry.addInterceptor(jwtTokenAdminInterceptor)
                .addPathPatterns("/admin/**")
                .excludePathPatterns("/admin/login", "/admin/register");
        registry.addInterceptor(jwtTokenUserInterceptor)
                .addPathPatterns("/user/**")
                .excludePathPatterns("/user/login", "/user/register", "/user/lostAndFound/list", "/user/category/list");
                //.order(1);
//        registry.addInterceptor(refreshJwtTokenUserInterceptor)
//                .addPathPatterns("/user/**")
//                //.excludePathPatterns("/user/login", "/user/register", "/user/lostAndFound/list", "/user/category/list")
//                .order(0);
    }

    /**
     * 通过knife4j生成接口文档
     * @return
     */
    @Bean
    public Docket docketForAdmin() {
        ApiInfo apiInfo = new ApiInfoBuilder()
                .title("校园失物招领平台项目接口文档")
                .version("1.0")
                .description("校园失物招领平台项目接口文档")
                .build();
        Docket docket = new Docket(DocumentationType.SWAGGER_2)
                .groupName("管理端接口")
                .apiInfo(apiInfo)
                .select()
                //指定生成接口需要扫描的包
                .apis(RequestHandlerSelectors.basePackage("com.example.campus.controller.admin"))
                .paths(PathSelectors.any())
                .build();
        return docket;
    }

    @Bean
    public Docket docketForUser() {
        ApiInfo apiInfo = new ApiInfoBuilder()
                .title("校园失物招领平台项目接口文档")
                .version("1.0")
                .description("校园失物招领平台项目接口文档")
                .build();
        Docket docket = new Docket(DocumentationType.SWAGGER_2)
                .groupName("用户端接口")
                .apiInfo(apiInfo)
                .select()
                //指定生成接口需要扫描的包
                .apis(RequestHandlerSelectors.basePackage("com.example.campus.controller.user"))
                .paths(PathSelectors.any())
                .build();
        return docket;
    }

    /**
     * 配置跨域访问
     *
     * @param registry
     */
    @Override
    public void addCorsMappings(CorsRegistry registry) {
        registry.addMapping("/**") //本项目中那些资源是允许跨域访问的
                .allowedOriginPatterns("*")//允许跨域访问的源  www.baidu.com 在spring 5.3之后使用allowedOriginPatterns替代allowedOrigins
//                .allowedOrigins("*")
                .allowedMethods("GET", "POST", "PUT", "DELETE")
                .allowedHeaders("*") //允许跨域访问的请求头
                .allowCredentials(true); //是否允许携带cookie
    }

    /**
     * 设置静态资源映射
     * @param registry
     */
    protected void addResourceHandlers(ResourceHandlerRegistry registry) {
        registry.addResourceHandler("/doc.html").addResourceLocations("classpath:/META-INF/resources/");
        registry.addResourceHandler("/webjars/**").addResourceLocations("classpath:/META-INF/resources/webjars/");
    }

    /**
     * 扩展Spring MVC框架的消息转换器
     * @param converters
     */
    protected void extendMessageConverters(List<HttpMessageConverter<?>> converters) {
        log.info("扩展消息转换器...");
        //创建一个消息转化器对象
        MappingJackson2HttpMessageConverter converter = new MappingJackson2HttpMessageConverter();
        //需要为消息转换器设置一个对象，对象转换器可以将Java对象序列化为json数据
        converter.setObjectMapper(new JacksonObjectMapper());
        //将自己的消息转换器加入容器中
        converters.add(0, converter);
    }
}
